actuationDiskSource.H

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/*---------------------------------------------------------------------------*\
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   \\    /   O peration     |
    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
-------------------------------------------------------------------------------
    Copyright (C) 2011-2017 OpenFOAM Foundation
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
Class
    Foam::fv::actuationDiskSource
 
Group
    grpFvOptionsSources
 
Description
    Actuation disk source
 
    Constant values for momentum source for actuation disk
    \f[
        T = 2 \rho A U_{o}^2 a (1-a)
    \f]
    and
    \f[
        U_1 = (1 - a)U_{o}
    \f]
 
    where:
    \vartable
        A   | disk area
        U_o | upstream velocity
        a   | 1 - Cp/Ct
        U_1 | velocity at the disk
    \endvartable
 
Usage
    Example usage:
    \verbatim
    fields          (U);        // names of fields to apply source
    diskDir         (-1 0 0);   // disk direction
    Cp              0.1;        // power coefficient
    Ct              0.5;        // thrust coefficient
    diskArea        5.0;        // disk area
    upstreamPoint   (0 0 0);    // upstream point
    \endverbatim
 
 
SourceFiles
    actuationDiskSource.C
    actuationDiskSourceTemplates.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef actuationDiskSource_H
#define actuationDiskSource_H
 
#include "cellSetOption.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace fv
{
 
/*---------------------------------------------------------------------------*\
                     Class actuationDiskSource Declaration
\*---------------------------------------------------------------------------*/
 
class actuationDiskSource
:
    public cellSetOption
{
 
protected:
 
    // Protected data
 
        //- Disk area normal
        vector diskDir_;
 
        //- Power coefficient
        scalar Cp_;
 
        //- Thrust coefficient
        scalar Ct_;
 
        //- Disk area
        scalar diskArea_;
 
        //- Upstream point sample
        point upstreamPoint_;
 
        //- Upstream cell ID
        label upstreamCellId_;
 
 
private:
 
    // Private Member Functions
 
        //- Check data
        void checkData() const;
 
        //- Add resistance to the UEqn
        template<class RhoFieldType>
        void addActuationDiskAxialInertialResistance
        (
            vectorField& Usource,
            const labelList& cells,
            const scalarField& V,
            const RhoFieldType& rho,
            const vectorField& U
        ) const;
 
        //- No copy construct
        actuationDiskSource(const actuationDiskSource&) = delete;
 
        //- No copy assignment
        void operator=(const actuationDiskSource&) = delete;
 
 
public:
 
    //- Runtime type information
    TypeName("actuationDiskSource");
 
 
    // Constructors
 
        //- Construct from components
        actuationDiskSource
        (
            const word& name,
            const word& modelType,
            const dictionary& dict,
            const fvMesh& mesh
        );
 
 
    //- Destructor
    virtual ~actuationDiskSource() = default;
 
 
    // Member Functions
 
        // Access
 
            //- Return Cp
            scalar Cp() const
            {
                return Cp_;
            }
 
            //- Return Ct
            scalar Ct() const
            {
                return Ct_;
            }
 
            //- Normal disk direction
            const vector& diskDir() const
            {
                return diskDir_;
            }
 
            //- Disk area
            scalar diskArea() const
            {
                return diskArea_;
            }
 
 
         // Add explicit and implicit contributions
 
            //- Source term to momentum equation
            virtual void addSup
            (
                fvMatrix<vector>& eqn,
                const label fieldi
            );
 
            //- Source term to compressible momentum equation
            virtual void addSup
            (
                const volScalarField& rho,
                fvMatrix<vector>& eqn,
                const label fieldi
            );
 
 
        // IO
 
            //- Read dictionary
            virtual bool read(const dictionary& dict);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace fv
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
    #include "actuationDiskSourceTemplates.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //